Binder booster for looms



J. B. BELL BINDER BOOSTER FOR LOOMS 2 Sheets-Sheet 1 Filed Sept. 10,1940 INVENTOR ATTO RNEYS Dec. 23, 1941.

J. B. BELL BINDER BOOSTER FOR LOOMS Filed Sept. 10, 1940 2 Sheets-Sheet2 ATTORNEYS Patented Dec. 23, 1941 UNITED STATES PATENT OFFICE BINDERBOOSTER FOR LOOMS James Bruce Bell, Seneca, S. 0.

Application September 10, 1940, Serial No. 356,219

4 Claims.

This invention relates to looms and more particularly to an improvedprovision for controlling the dagger whereby an increase in travel andan acceleration is attained in the movement of the dagger fromengagement with the frog, with a corresponding acceleration in itsreturn movement into engagement with the frog.

A further object is to simplify the structure and at the same time makefor the ready attachment of the dagger controlling means to the loom andto secure a more positive actuation of the dagger only its controllingmeans, which, together with the acceleration in the movement of thedagger, permits of an increased speed in the operation of the loom.

With the foregoing and other objects and advantages to be attained, aswill hereinafter be more fully described, the invention consists in thegeneral structure and particular parts of a special attachment to beapplied as an intermediary between the shuttle binder of the loom andthe lever arm extension of the dagger as hereinafter described anddefined in the appended claims, reference being had to the accompanyingdrawings illustrating a practical embodiment of the invention, in which-Figure l is a fragmentary View in rear elevation of the lay and adjacentportion of the sword on which it is mounted together with the appliedattachment of the present invention and the associated portions of theshuttle binder and dagger;

Figure 2 is a fragmentary plan view and partial horizontal section onthe line 22 of Figure 1; and

Figure 3 is a partial elevation and vertical section on the line 33 ofFigure 1.

Referring now to the drawings in detail, the numeral l designates thelay of a conventional loom and the numeral 2 the adjacent portion of eone of the swords on which the lay is mounted. As shown, the sword has ashoulder portion 3 on which the adjacent bottom portion of the lay restsand from this shoulder portion the sword is formed with a fiat,elongated, platelike vertical extension 4 which is secured to theadjacent side face portion of the lay by a bolt 5 which extendsthroughout the width of the lay and is provided on its screw-threadedend portion with a retaining nut 6.

Located above the lay l is the conventional shuttle binder I, which isusually urged toward the shuttle or inwardly of the shuttle box by thecooperative engagement therewith of a finger or lever arm extension ofthe dagger and the dagger being either'urged by a spring element or bythe overweighting of its portion at the side of its pivotal axis on theprotector rod whereby the constant tendency of the dagger is to movetoward the frog of the loom, and, by which provision, upon forcefulmovement of the shuttle binder I outwardly, the dagger is lifted fromengagement with the frog.

As shown more clearly in Figure 3, the dagger, designated by the numeral8, is mounted on a conventional protector rod 9 which is j-ournaled atits opposite ends in bearing brackets l0, one of which is conventionallyshown mounted on the front portion of the adjacent sword 2. The beveledfree end portion H of the dagger 8, when the shuttle is removed from theshuttle box of the loom, is lowered to a plane as shown in full lines inFigure 3 where it will engage the undercut steel or shoulder member l2on the upper face of the frog l3, at which time, the regular lever armextension at the opposite side of the pivotal axis of the dagger is inengagement with the shuttle binder, as hereinbefore described, so that,at this time, the shuttle binder is moved to its inner position which isthat shown in full lines in Figure 3. When the shuttle is placed in theshuttle box the binder element 1 is accordingly moved outwardly, and inthe conventional loom in which the lever arm extension of the dagger isof an effective length from the axis of the protector rod 9substantially the same as the length of the dagger, the dagger end I Ilifts only a relatively short distance from the frog l3 to clear thesteel or shoulder member l2 thereof, and, in any case, the lift of thedagger end is never in excess of the distance that the upper end of thelever extension of the dagger travels with the outward movement of theshuttle binder. Therefore, if the shuttle is not properly placed in theshuttle box or a worn shuttle is used, it sometimes happens that themovement of the shuttle binder is not sufficient to lift the daggerclear of the steel or shoulder member l2 of the frog, thereby preventingoperation of the loom until the dagger has by some special means orinstrumentality been lifted clear of the frog member f2 and thus causinga delay in the operation of the loom.

The attachment of the present invention has been developed and broughtabout to overcome the disadvantage just above noted, and the inventiveidea is to shorten the lever arm extension of the dagger and tointerpose between the shortened arm and the shuttle binder anintermediary in the form of a special lever element which directlyengages and is actuated by the shuttle binder and in turn is engaged bythe shortened lever arm extension so that said intermediate leverelement moves the shortened lever arm extension of the dagger the samedistance said intermediate lever element travels when actuated by theshuttle binder and thereby lifts the dagger to a higher plane than ispossible under the old system of leverage hereinabove described.

As shown, the dagger 8 is provided with an integral extension I4rearward of its pivotal axis, on which extension is sleeved a tubularbody portion I5 of a shortened lever arm I6, said body portion I5 beingsecured in longitudinally adjusted position on the extension I4 bysetscrews I I. The lever arm I6 is provided at its upper end with arounded head I8, the inner face portion I9 being convex (see Figure 3),said portion I9 engaging the intermediate lever element 20 to be nowdescribed. I

The intermediate lever element 20 is substantially T-shape, having astem portion 2| which is horizontally disposed and pivotally mounted ona supporting bracket 22, which latter is placed against the outer faceof the vertical extension 4 of the sword 2 and secured thereto by beingprovided with an aperture for the reception of the end portion of thesame bolt 5 which secures the lay to the sword and the nut 6 of saidbolt 5 being tightened against the outer face of the bracket 22 insteadof directly against the sword extension 4 and thereby clamping the swordportion between the bracket and the adjacent side of the lay. Thebracket 22 is provided with a bored lug 23 which receives a headedpintle 24 which is inserted downwardly through an alined bore in acorresponding hub portion 25 provided at the end of the stem 2| of saidintermediate lever element 20 and secured in place by a cotter pin 26which is passed through a transverse aperture in the pintle 24 justbeneath the lug 23 of the bracket 22.

One arm 2! of the T-head of the lever element 20 is extended upwardlyinto the path of the end portion of the shuttle binder I which isreduced as at 28 (see Figure 1). The end portion of this arm 21 isprovided with a lateral lug 29 which extends toward and engages the rearside of the shuttle binder I, while the opposite arm 3!! of said leverelement 20 is reduced in thickness in the region of its lower end, as at3|, said reduced portion 3| being flattened for a slidable engagement ofthe convex head portion I9 of the lever arm I5 therewith.

From the foregoing description of the structure as illustrated in theaccompanying drawings it is evident that the dagger controlling andoperating means of the present invention is readily substituted in placeof the conventional means heretofore provided in a loom of the characterdescribed, that is to say, it is only required that the longer,heretofore used lever arm, be removed from the dagger extension I4, ifsuch type of dagger element is employed, and substitute in place thereofthe shorter lever arm I6 of the present invention, and apply the bracket22 and lever intermediary 20 carried thereby, it being only necessary toremove the nut 6 on the bolt 5 which holds the lay I to the swordportion 4 and then slide the apertured portion of the bracket 22 overthe protruding end of the bolt and replace the nut 6 and tighten thesame against the bracket.

By the use of the cooperative: assembly of the elements of the presentinvention, there are many advantages attained, to wit: first, easyslamming off of the loom is prevented, thus saving supplies; second, itmakes possible the running of a slacker shuttle box, thereby decreasingthe wear of the shuttles; third, it makes possible the use of a slackerprotector rod spring; fourth, the speed of the loom can be increasedtwenty to thirty picks more per minute; and, fifth, old shuttles thathave worn thin can be run a longer length of time due to the boostedlift of the dagger by the multiple leverage provided between the daggerand the shuttle binder. There is a still further and very importantadvantage in the simplified yet highly practical and efficient device ofthe present invention in that it can be attached to the loom inapproximately five minutes, on the average, and by anyone of ordinaryskill.

While the structure illustrated in the drawings embodies a practicaladaptation of the invention it is obvious that considerable alterationand modification is possible within the spirit and scope of theinvention as defined in the appended claims. The invention, therefore,is not limited to the specific construction and arrangement as shown.

What is claimed is:

1. In a loom, in combination with the shuttle binder and a conventionaldagger mounted on and extending forwardly of a conventional protectorrod, the dagger and protector rod unitary assembly including a rearwardextension swingablein fixed relation to and with the dagger, anupstanding lever arm of shorter length than that of the dagger and theupper end portionof said arm having a rounded contact protuberance at aradial distance from the axis of the protector rod less than the lengthof the dagger, said lever arm having a base portion longitudinallyadjustable on the extension of the dagger and protector rod unitaryassembly, a sword, and an intermediary member comprising a substantiallyT-shaped lever element pivotally mounted at the end of its stem portionto the sword whereby the element is swingable horizontally about avertical axis, the end portion of the upper arm of the head of saidlever element having a lateral lug projected toward and slidablyengaging the outer side of the shuttle binder and the end of theopposite arm of the head of said lever element being flattened andreceiving in slidable engagement therewith the rounded contactprotuberance at the end of the said lever arm carried by the extensionof the dagger and protector rod unitary assembly.

2. The herein described controlling means for the dagger of a loom,comprising in combination with the sword, lay, shuttle binder and thedagger, a bracket attachable to the outer face of the sword portion towhich the lay is attached and by the same bolt which conventionallyconnects the lay and sword, said bracket having a vertically bored lug,a substantially T-shaped lever element the stem portion of which isdisposed horizontally and provided at its end with a vertically boredhub hingedly mounted on the bracket by a headed pintle inserteddownwardly through the aligned bores of the lever element hub and thelug of the bracket, the upper arm of the head of said lever elementhaving a lug at its end projected laterally and slidably engaging theouter side of the shuttle binder, the

lower arm of the head of said lever element be-' ing flattened, thedagger having an integral extension rearward of its pivotal axis, and anupstanding lever arm having a base portion sleeved on said daggerextension with provision for securing the arm in longitudinally adjustedposition on the extension, said lever arm being of a length less thanthat of the dagger and provided at its end with a rounded protuberanceslidably engaging the flattened portion of the lower arm of the head ofsaid first mentioned lever element, said protuberance being radiallydistant from the axis of the dagger also less than the length of thedagger.

3. In a loom, in combination with a shuttle binder and the dagger, anupstanding lever arm mounted on an extension of the dagger rearward ofthe pivotal axis of the dagger, and an intermediary element controllingand actuating said lever arm comprising a lever element interposedbetween the arm and the shuttle binder, a vertical pivot for mountingsaid lever element, said lever element being substantially T-shaped withthe upper arm of its head in abutting relation to the outer side of theshuttle binder and the lower arm of the head receiving the upper end ofsaid lever arm on the dagger extension in slidable contact therewith.

4. In a loom, the combination with the shuttle binder and dagger, asword, a lever arm movable with and in fixed relation with the dagger,said lever arm being of a length less than that of the dagger, asubstantially T-shaped element, a vertical pivot, the end of the stemportion of the T-shaped element mounted on the vertical pivot forhorizontal swinging movement, the upper end of the head of the T-shapedelement in the path of travel of the shuttle binder and operated by themovement thereof and the lower end engaging the lever arm carried by thedagger.

JAMES BRUCE BELL.

